Apparatus for dishing and rounding steel car-wheels.



No. 789,633. 4 PATENTED MY 9, 1905. C.' T. SGHOBN.

APPARATUS FOR DISHING AND ROUNDING STEEL GAR WHEELS APPLIOATION FILED00T. e, 1904.

mTnn STaTns Patented May 9, 19054.

PATENT Genion.

CHARLES T. SCHOEN, OF SEWIICKLEY, PENNSYLVANIA.

APPARATUS FOl DISHING AND SPECIFICATION forming part of Letters Patent N0. 789,633, dated May 9, 1905.

Application filed October 5, 1904. Serial No. 227,285.

To @ZZ 'Ll/w'm/ 'llt muy concern:

Be it known that I, CHARLES T. ScHouN, a citizen of the United States,residing at Sewickley, in the county of Allegheny and State ofPennsylvania, have invented a certain new and useful Improvement inApparatus for Dishing and Rounding Steel Car-W'heels, of which thefollowing is a full, clear, and exact description.

In rolling steel car-wheels it is not always possible to produce themwith perfectly circular treads, and resort, therefore, must be had tosome milling-machine to true thc treads that are not thus circular. Theskin formed by rolling renders the tread more durable and otherwise moresatisfactory than is a tread dressed by millingI or other operationwhich removes such skin, and, moreover. the milling operation adds anelement of cost to production which it is important to avoid from acommercial view-point.

I have found that the inaccuracies in the circularity and diameter ofrolled-steel carwheels and any slight changes in the contour of thewheel-tread which miglit be occasioned by dishing the wheel may beeffectively and economically corrected and the skin retained whole bysubjecting' the wheel while hot to the action of a circular collapsibledie applied to the rim or tread, which serves to reduce it to apractically true circle. This operation is performed preferably afterthe wheel has been dished and is a sequence to that operation and inconnection with the dies for performing' it.

The invention comprises a circular die composed of a series of segmentsof the contour or profile of a wheels rim or tread and adapted to beconverged or collapsed about a wheel, so as to correct any of theaforesaid inaccuracies, as I will proceed now more particularly to setforth and claim.

In the accompanying' drawings, illustrating the invention, in theseveral figures of which like parts are similarly designated, Figure 1is a plan View of the lower die or matrix. Fig. 2 is a vertical sectionof a pair of dies, including the matrix of Fig. 1, for dishing andtruing rolled -car-wheels. Fig. 3 is a vertical section of the samedies, omitting the segmental die-operating ring and as used for dishingthe wheel.

The matrix 1 is shaped to receive the hub and web and outer face of therim ol a carwheel. The male die 2 is complementally shaped to give tothe wheel in the matrix the requisite dish or flare. This dishingoperation and -the next subsequent operation of truing the rim or treadare performed while the wheel is hot. To get these operations into asquick sequence as possible and while the wheel is hot and withoutrequiring rcheating, I provide the matrix with a circumferential ring 3on a support 4I, having an annular groove 5 in its lace. Next this ring3 and of smaller diameter is arranged upon the support I a segmental die6, concentric with the ring and forming a true circle and having itsinner vertical face of the contour or prolle of the tread or rim of thewheel and its outer vertical face beveled.

7 is a concentric ring surrounding the male die and carried by the heador platen of its press.

8 is a wedge-shaped ring to be inserted iu the space between the ring 3and segmental die 6, as seen in Fig. 2, and to be acted upon by thedescent of the ring 7 to move the segmental die-sections radially, andthus close said dieV about the rim or tread of the wheel to true thewheel.

As indicated in Fig. 3, the dishing is effected while the wedge-ring isomitted and then the dies are parted, the wedge-ring inserted betweenthe ring 3 and the segmental die and in line with the ring 7, and themale die and said ring 7 forced down, thereby further forcing thewcdge-ring down between the ring 3 and segmental die and crowding` thesegments of said die up against the rim or tread of the wheel, andthereby correcting all irregularities of the wheel without in any wiseimpairing the skin produced by the rolling action by which the wheel wasmade in the iirst instance. In this operation the ring 3 serves as anabutment for the wedge-ring in its action against the segmental dies.The outer ring 3, however, may be omitted, and in that case it would bewell to make the wedgeringsomewhat heavier than is necessary when thering 3 is employed. There is a possibility of swelling or pinching upportions of the tread between the adjacent edges of the segments of thesegmental die. To correct this defect, the support 4 for the segmentaldie is turned or shifted sufiiciently to bring the face of the segmentaldie opposite the swelled or pinched-up portions of the tread, and thenthe wedge-ring is brought down again, so as to collapse the segmentaldie about the tread, and thus correct the tread in its entirety. Thegroove 5 permits the full descent of the wedgedie in order to apply thelateral or horizontal pressure to the segmental die equably throughoutits full height, and thereby avoid any unequal lateral strains on eitherthe segmental die or the supporting-ring' 3. The

H pressure exerted upon the wheel by the seg'- mental die is in radiallines, and hence the terms lateral and horizontal are to be understoodrelatively to the illustrations in the drawings.

Thatl claim isv l. Apparatus for dishing and rounding steel car-wheels,comprising' essentially a matrix and a complemental die by means ofwhich a preformed wheel is dished, and a radiallymovable segmental diearranged upon the matrix and surrounding the rim of the dished wheelthereon and having' a face of the contour of the tread and flange of thewheel, and a ring operated by the descending' Icomplemental die to closethe segmental die about the rim and flange of the wheel to round thesame.

2. A matrix and a complemcntal die shaped to receive a preformedcar-wheel, combined with a wheel-rounding die of circular form made upof segments having a profile of the 'flanged rim of the wheel and with abeveled back, and a beveled ring encircling the segmental die andadapted to close said segments about said wheel under the pressure ofthe male die, whereby by successive operations of the dies the wheel isdished and its rim or tread rounded, substantially as described.

3. A matrix and a complemental male die, having' the profile of a dishedcar-wheel, combined with a wheel-rounding die of circular form made upof segments of the contour of the tread and flange of the wheel andhaving a beveled back and placed around the wheel on the matrix andsupported thereby, and a beveled ring encircling the segmental die andacted upon by the descent of the male die to close said segments aboutsaid wheel, whereby by successive operations of the dies the wheel isdished and rounded.

A. A matrix and a complemental male die shaped to dish a car-wheel,combined with a wheel-rounding die of circular form, in segments, asupport for said segmental die, a surrounding ring for said segmentaldie arranged upon said support, and a wedge-ring actuated by the maledie and adapted to enter the space between the segmental die and itssurrounding ring' and force said segmental die about the rim of thewheel.

5. A matrix and a complemental male die shaped to dish a car-wheel,combined with a wheel-rounding die of circular form, in segments, asupport for said segmental die, a surrounding ring for said segmentaldie a1'- ranged upon said support, and a wedge-ring actuated by the maledie and adapted to enter the space between the segmental die and itssurrounding ring and force said segmental die about the rim of thewheel, said support having an annular groove in its face to receive thewedge-ring.

6. A matrix and a male die for making carwheels, combined with acircular segmental die having a face contour corresponding with thetread of the wheel and a beveled back, a su rrounding abutment-ring, anda wedge-ring adapted to work between the beveled back of the segmentaldie and its abutment-ring' to forcibly close the segmental die about therim or tread of the wheel.

7. Apparatus for dishing and rounding rolled-steel car-wheels,comprising a matrix, a male die, a circular segmental die adapted tosurround the rim of the wheel when in the matrix and having a face ofthe contour or profile of the said rim, an abutment-ring and aninterposed wedge-ring adapted to be operated by the male die to forciblyclose the segmental die about the rim.

In testimony whereof l have hereunto set my hand this 4th day ofOctober, A. D. 190%.

CHARLES T. SCHOEN.

Vitnesses:

W. MARTIN JoHNsoN, FRANK B. FOSTER.

IOO

